70% of 23 is 16.1
What is 4/5 of 20.5?
1 answer:
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Answer: Our required probability is 0.88.
Step-by-step explanation:
Since we have given that
Number of male students are smokers = 10
Number of male students are non smokers = 490
total number of male students = 500
Number of female students are smokers = 40
Number of female students are non smokers = 363
Total number of female students = 403
Probability that both are non smokers is given by
Hence, our required probability is 0.88.
For the first one use the slope formula: 
So for you that would look like this:
For number 2, in order for a slope to be 0, it has to be a completely horizontal line with no steepness whatsoever. That can ONLY happen with lines that are "y=some constant with no x". So that answer has to be y = -5. For that last one, we have to use the slope-intercept form of a line and use the point they give us along with the slope to find the y-intercept, or the "b". That looks like this for us:
so b= 5/6. So our equation, fitting the slope and y intercept back in, gives us 
So for you that would look like this:
For number 2, in order for a slope to be 0, it has to be a completely horizontal line with no steepness whatsoever. That can ONLY happen with lines that are "y=some constant with no x". So that answer has to be y = -5. For that last one, we have to use the slope-intercept form of a line and use the point they give us along with the slope to find the y-intercept, or the "b". That looks like this for us:
Multiply without the decimal points, then put the decimal point in the answer
2.439 has 3 decimal places
10.2 has 1 decimal place
Therefore, the answer has 4 decimal places